Yealink SIP-T40P User Manual page 148

User Guide for the SIP-T40P IP Phone
To register account and configure BLA feature on phone A via web user interface:
1. Register the account 14019833020.
2. Click on A dv anced, and then select Draft BLA from the pull-down list of Shared
L ine.
3. Enter the desired number in the BL A Number field.
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